gpu: nvgpu: Free enabled flags on driver unload

Make sure the enabled flags are freed before the driver unloads.

Bug 200369180

Change-Id: Ibac9ee61ca99bdfda03d76e393c7cd6cb6cc299a
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1632752
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

3 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/enabled.c b/drivers/gpu/nvgpu/common/enabled.c
index 06cbbe34..cded36c8 100644
--- a/drivers/gpu/nvgpu/common/enabled.c
+++ b/drivers/gpu/nvgpu/common/enabled.c
@@ -40,6 +40,14 @@ int nvgpu_init_enabled_flags(struct gk20a *g)
         return 0;
 }
 
+/*
+ * Call this on driver shutdown!
+ */
+void nvgpu_free_enabled_flags(struct gk20a *g)
+{
+        nvgpu_kfree(g, g->enabled_flags);
+}
+
 bool nvgpu_is_enabled(struct gk20a *g, int flag)
 {
         return test_bit(flag, g->enabled_flags);
diff --git a/drivers/gpu/nvgpu/common/linux/module.c b/drivers/gpu/nvgpu/common/linux/module.c
index 5d91da8f..cc2b5ec7 100644
--- a/drivers/gpu/nvgpu/common/linux/module.c
+++ b/drivers/gpu/nvgpu/common/linux/module.c
@@ -673,6 +673,8 @@ void gk20a_remove_support(struct gk20a *g)
 #ifdef CONFIG_TEGRA_19x_GPU
         t19x_remove_support(g);
 #endif
+
+        nvgpu_free_enabled_flags(g);
 }
 
 static int gk20a_init_support(struct platform_device *dev)
diff --git a/drivers/gpu/nvgpu/include/nvgpu/enabled.h b/drivers/gpu/nvgpu/include/nvgpu/enabled.h
index e7dd61d2..001cafb0 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/enabled.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/enabled.h
@@ -170,5 +170,6 @@ bool nvgpu_is_enabled(struct gk20a *g, int flag);
 bool __nvgpu_set_enabled(struct gk20a *g, int flag, bool state);
 
 int nvgpu_init_enabled_flags(struct gk20a *g);
+void nvgpu_free_enabled_flags(struct gk20a *g);
 
 #endif